Machine for making collapsible and expansible tubes,申请号US19450622970-传众专利搜索

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发明名称	Machine for making collapsible and expansible tubes
摘要
申请公布号	US2508798(A)	申请公布日期	1950.05.23
申请号	US19450622970	申请日期	1945.10.18
申请人	BLANCHE H. POLSEN;MILDRED P. NELSON;SVEN HERBERT NELSON;NORMAN HUBBELL NELSON	发明人	POLSEN SAMUEL D.;NELSON SVEN HERBERT
分类号	B31F1/20	主分类号	B31F1/20
代理机构		代理人
主权项
地址

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